Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long
(461 reviews)
Price: $14.43
In Stock
Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long
Item # 166079
Our Price: $14.43
In Stock
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- All Info
- Reviews (461)
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- Videos (2)
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ABS Fasteners Trailer Suspension Parts - 166079
- Suspension Bolts
- Camper
- Car Hauler
- Utility Trailer
- 3-1/2 Inch Long
- 9/16 Inch Diameter
- ABS Fasteners
9/16" Diameter spring-retainer bolt is used to mount slipper spring inside front hanger. Includes locknut.
Features:
- Suspension bolt attaches leaf spring to front hanger
- Included locknut secures in place on bolt
Specs:
- Diameter: 9/16"
- Length: 3-1/2"
166079 Spring Eye Bolt with Nut - 3-1/2" Long
91635B
Video of Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Review of Trailer Leaf Spring Suspension - Spring Mounting Hardware - 166079
Jeff: Hello, everybody. This is Jeff at etrailer.com. Today, we're going to take a look at the 9/16th diameter, 3 1/2 inch long spring eye bolt with the lock nut for slipper springs. Now this 9/16th diameter spring retainer bolt is used to secure the slipper spring to the front hanger of your slipper spring trailer suspension. The 3 1/2 inch long bolt is common on trailers that have a 6,000 pound or 7,000 pound axle and uses 2 inch wide leaf springs.Now, the bolt itself is a grade five bolt. The way we can tell that is, if you look at the head, you'll see three lines on it.
That'll indicate that that meets the grade five designation. The length on this is 3 1/2 inches, and that's measured from under the head to the end of the bolt, so there's your 3 1/2 inch length. Diameter of this bolt is 9/16th of an inch. The thread size on the end here that the lug nut or the block nut attaches to is 9/16th by 18 threads per inch. Now the bolt head size is a 13/16th of an inch, and let's show you here's a 13/16 socket.
Oops, wrong one. Here's the 13/16 size socket. You can see it fits securely on there.And the lug nut size uses the 7/8th inch size socket, and that's the first one here I pulled. And you can see that fits exactly on there. And this included lock nut is what will secure this bolt to the spring eye.
But that should do it for the review on the 9/16th diameter, 3 1/2 inch long spring eye bolt with the lock nut for slipper springs.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Defective
Customer Reviews
Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long - 166079
Average Customer Rating: 4.8 out of 5 stars (461 Customer Reviews)
9/16" Diameter spring-retainer bolt is used to mount slipper spring inside front hanger. Includes locknut.by: Vania10/07/2022
Just what needed for my trailer. My old leaf springs were so rusted that I was one pot hole away from being broken down on the side of the road. These new ones are perfect.
by: Keith 12/18/2023
When I asked questions about my order they answered back quickly. Everything fit like it should. Yes time will tell if the springs are good.
by: Joe V. 06/11/2013
Great Experience!
When I noticed that the leaf springs on my 44 year old boat
trailer had cracked I thought I would never find replacements.
I fully expected to have to have something custom built.
I was amazed when I found the fantastic diagrams/descriptions
dimensions for replacement springs on etrailer.com
The phone support person was wonderfully helpful in confirming
if items were in stock and ready to ship. The replacement springs
arrived on time and everything bolted up perfectly!
Thanks for such a great site!
by: Ray01/14/2021
I will be disassembling and do a further visual coming up. But what I did see while on the trip is that it definitely looks as the rollers (gold colored like a grade 5 - 8 bolt, I'm assuming they are hardened) that are in the system to roll on the slipper springs are showing wear.
by: Keith 05/30/2024
Bolts where a exact fit.
by: Paul 04/26/2024
Everything was as expected! Products are as described and the shipping was fast! Thanks! I will buy from them again
by: David11/29/2018
I have bought many different products from Etrailer and the staff have been more than helpful and I would recommend this company.
by: Matt04/09/2021
Great products from e trailer. They work as expected and hassle free. Even better prices.
Matt
4/10/2022
The trailer springs and brackets have been great no issues at all. Very pleased with etrailer products.
by: Robert H.06/09/2017
I have purchased a number of items from etrailer.com such ans leaf springs, axle and hub assembly, and other items as well, I recently finished the trailer and it is now on a cross country trip. The trailer has just finished a 3,000 mile leg of this trip and I am told it was so smooth that it could not be felt by the towing vehicle.
Every product I have ordered from etrailer.com has been top quality and has worked extremely well. I would come back again for any of my future trailer needs.
Robert H.
6/27/2018
The trailer has since been on a second cross country trip and it is still working just like it was the day I finished it.
by: Ryan 11/18/2023
Bolt was a great replacement
by: Donald08/24/2023
Two of the bolts were sent as the wrong size...they were properly labeled, but were 9/16 instead on 1/2. Kylie requested photos of the bolts to "prove" they were incorrect which kind of frustrated me further. She is sending new ones to me soon. One of the hub kits arrived with the seal broken and the contents were scattered in the shipping box, but all the parts from the kit were there, so no harm done.
by: Dan 05/03/2024
Awesome product and fast shipping!
by: George05/03/2024
It's 4 in long and no shoulder.
by: Cody 04/04/2024
Great company to do business with and very knowledgeable assistants! Recommended
by: Sebastien04/23/2023
Quick delivery and product as described
by: Fred12/21/2020
Super service getting all the right parts. I received the parts in just two days it took about one hour to change both springs .everything fit grate back on the road.thanks
by: Joe C07/12/2021
Customer Service was / is excellent. Timely delivery easy ordering process. Correct parts and easy to install Great Company and would use again when I need to
by: Charles 09/26/2023
Very good service and very good parts as usual!
by: Bill12/22/2023
Right size
by: Ed08/21/2023
I get the correct hardware every time!
by: Dale09/29/2022
I received the order to late to use before my road trip.In total, it took 27 days to receive my order. I placed my order on September 1st and received the package on the 8th. Whomever packaged the order used a very larger box and three sheets of packaging paper. By the time I received the order it was missing half of the items I ordered. I emailed etrailer immediately and received a response quickly. I was told that a replacement order was sent to their warehouse or shipping department and they would send the replacement parts. However, this is where things started to brake down. I asked for a projected delivery date and i was told that it usually takes 3 to 5 days once it ships and they would send me an update once it shipped. On the 14th I still had not received an email stating the order had shipped so I emailed etrailer again. I left on my road trip on the 15th so did not have the time to check my emails until the 19th, and found I had not receive a reply yet so i sent another email. The response I received stated that they had sent me an email on the 14th to notify me that one of the missing items from my original order is now back ordered. I reviewed my email inbox and junk mail on three devices that receive all mail sent to my email address. I did not receive an email from etrailer as stated. Bottom line, i didn't receive the replacement items until the 27th. This put me on the road without the trailer parts I was counting on for my trip. I'm not a satisfied customer.
by: Joseph 11/01/2023
worked as advertised.
by: Fred 01/25/2023
Melissa @ eTrailer was simply the best. She took the time to confirm the leaf springs were the correct size for a trailer I am rebuilding. Received the parts on time. Could not have done better with any other company.
by: Patrick04/16/2020
The original spring bolts were 1/2" these are 9/16" and I had to enlarge mounting bracket holes but satisfied with these stronger bolts. The springs and all other hardware high quality at a very good price.
Patrick M.
4/17/2021
Great. Quiet, firm ride. Handles great.
by: Loretta 09/01/2023
The chat option helped with finding the items we needed. Loved the online videos. Item shipped promptly with great communication. Excellent customer service.
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See what our Experts say about this ABS Fasteners Trailer Suspension Parts
- Correct Bushing and Bolt for 4-Leaf Slipper Spring # e33SRThe 4-Leaf Slipper Spring # e33SR that you referenced actually comes included with the nylon bushing but if a replacement is needed then the 9/16 inch # TRBU11561 that you mentioned would be the correct size and will work perfectly. The correct bolt for this setup is the Redline Spring-Eye Bolt # 166079 that features a 9/16 inch diameter and 3-1/2 inch length.
view full answer... - Where is the Length of the Bolt part # 166079 MeasuredThe 3-1/2 inch length of the bolt part # 166079 is measure from below the head of the bolt to the end of it. Based on what you mentioned this should work well for you.
view full answer... - How to Determine Correct Slipper Spring Replacement for 1,500 lb AxleWhat happens to slipper springs is that over time they elongate and flatten out, particularly if your springs are considerably older. The most important measurement you mentioned was the 26 inches from the center of the spring eye to the end of the spring. Based on that the closest slipper spring we have that could work is the 3-Leaf Slipper Spring w/ Radius End for 1,500-lb Trailer Axles - 24-5/8" Long # SP-178275, which would work if you had a tandem-axle trailer. There are no slipper...
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- Replacement Slipper Spring for Boat Trailer 1000-lb AxleWell-worn leaf springs can become elongated and actually measure longer than their length when new. It is not uncommon for a leaf spring to get as much as 3/4-inch to 1-inch longer from years of use. If your spring measures 25-1/4-inches long then chances are that when new it was indeed the 24-5/8-inch length of the Redline # SP-177275. This 2-leaf spring is rated for 1000-lb trailer axles; you can check the sticker on your axle to confirm it's weight rating. This spring does indeed use...
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- Recommendation to Replace 3-1/4" Wet Bolts for Trailer SuspensionThe closest thing that we have to replace your 3-1/4" wet bolts is the Spring-Eye Bolt with Locknut for Slipper Springs # 166079 which measures 3-1/2" long and has a 9/16" diameter. This is a regular bolt without the grease fitting so you'll want to remove the bolts and grease them manually as opposed to pumping grease into them through the fitting. The only bolt we have that measures 3-1/4" is part # 7-7-6-11 but it only has a 5/16" diameter so it is really only meant for the open end...
view full answer... - Bolts Needed To Install Slipper SpringsFor the spring eye you would use the Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079, but slipper springs don't have the second spring eye, so a bolt is not used on the back end. You can also use a wet bolt like # 126B2, for less friction. The Shackle Bolt with Locknut for Double-Eye Springs - 3" Long # 166081 are for use with the spring and shackle straps used with a shackle straps on a tandem setup with an equalizer but it could be used for the springs and the...
view full answer... - What Replacement Hardware do I Need to Use with My Slipper Springs # # SP-161275?For the axle U-bolts, we have two different options: - 3" Round Trailer U-Bolts 9/16" Diameter # SP01-080 - 3" Round Trailer U-Bolts - 1/2" diameter # SP01-060 Since these bolts are so close in diameter, I recommend measuring the specific diameter of the bolts you have. For the spring-eye bolt, the correct bolt is the Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079 As for your broken 3/8 inch bolt, we have Leaf Spring Center Tie Bolt with Nut, 3/8" x 3" # 38-3TB....
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- Shackle Bolt With Nut For 3 Inch, 3-1/2 Inch, And 3-5/8 Inch LengthShackle Bolt with Locknut for Double-Eye Springs - 3" Long, # 166081 and Spring-Eye Bolt with Locknut for Slipper Springs - 3-1/2" Long # 166079 both come with a nut. The Step Wet Bolt for 1-3/4" Double Eye Springs # 34007-187-00 does not come with the nut, however we have confirmed a fit with nut # 192600
view full answer... - Replacement Suspension Components for 6,000 Lb Axles with 25-1/4 Inch Long Leaf SpringsThanks for the photo! I have everything you need to get your trailer back on the road. I have attached my recommendations on the following parts for you trailer as well as the quantities needed. Leaf Springs: part # e34SR (4) Equalizers: part # TREQ310 (2) Shackle Straps: part # 115208GALV (8) U-Bolts: part # APUBR-8 (2) Eye Bolts: part # 166079 (12) I have also attached a few review videos on the above products for you as well.
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- Will Putting Axle In Backwards Cause Trailer Brakes To Not Function?The reason your brakes are no longer functioning, is that they are actually directional with the front and rear pads being different. Since the axle is backwards meaning the brakes are backwards the brakes will not function. To fix this you will need to remove the axle and turn it around. As long as the shackle bolts are not rusted, you will have no issues reusing them. If they have any damage though I would go ahead and replace them for peace of mind. If you need a replacement we have...
view full answer... - Could Spring Eye-Bolt 166081 be Used with Leaf Spring SP-040275The spring eye-bolt part # 166081 is 1/2 inch shorter than the part # 166079 at 3 inches and would work well with the slipper spring part # SP-040275 that you referenced.
view full answer... - Replacement 30" Long Slipper Spring for Boat Trailer It sounds like you're looking for the 4-Leaf Slipper Spring w/ Flat End part # SP-040275 which is a slipper spring, 30" long x 1-3/4" wide, with four leaves. It can then be mounted on a 2" square axle with the CE Smith U-Bolt Kit part # CE23103. For the suspension bolts, we have the Spring-Eye Bolt with Locknut for Slipper Springs part # 166079.
view full answer... - Can You Get etrailer Suspension Kit E99ZR without Hangers?No problem! It's not all going to be as a kit but you'll need the following part's and quantities: (2) Equalizers # TREQE1 (8) Shackle Straps # TRSL313 (14) Bolts # 166079
view full answer... - Single Slipper Spring for Tandem 6000 Pound Axles 2 Inches WideTo determine the appropriate replacement slipper spring you would need there are a few measurements that are crucial. In order to get these measurements the current spring cannot have a load on it. If you have already removed the slipper spring from the trailer that works great. Or you can measure while it is on the trailer, just make sure that when you jack the trailer up you do so by the trailer frame. Also, make sure it is safe and secure before taking your measurements. The measurements...
view full answer... - Axle Spacing When Using Slipper Spring Equalizer Kit # APT6SE with 26 inch Long Leaf SpringsBased on your leaf spring length the axle spacing you'd have with the hanger kit part # APT6SE would be right at 33 inches. This kit is designed for use with 9/16 inch bolts like the # 166079 and we would not recommend drilling out the kit to fit a wider bolt.
view full answer... - Recommended Slipper Spring for Custom Kayak TrailerThanks for the photos with measurements. The 2-Leaf Slipper Spring w/ Radius End for 1,000-lb Trailer Axles - 24-5/8" Long # SP-177275 are rated for 500lbs each for use with a 1000K axle. This will work with the inside to inside measurement you are seeking. You will simply need the 9/16 inch bolt # 166079. If there is any extra space in the hanger it won't be an issue with the bolt and bushing.
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view full answer... - Correct Track Alignment Replacement Hanger Bolt RecommendationWhat you'd want is the replacement suspension bolt part # 166079. This is 9/16 inch in diameter like you need and is 3-1/2 inches long too. It comes with matching nut as well.
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- What Type of Bushing Comes with 4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer AxlesThe bushing that comes with the 4-Leaf Slipper Spring # SP-179275 is a nylon bushing like part # TRBU11566 so you need a standard non-grease bolt like part # 166079 for the installation. The nylon bushings are pressed in there by themselves without any specific type of sleeve.
view full answer... - Do Slipper Springs Come With Suspension BoltsSlipper springs like the # SP-177275 and # SP-179275 include the nylon bushings but do not come with a spring-eye bolt. Both of these use a 9/16" diameter bolt so you can use the # 166079 for a bolt and locknut.
view full answer... - Replacement Springs for Fulton Boat TrailerYour 32 inch springs were likely a little shorter than that originally and have flattened over time. It sounds like what you are looking at, the 4-Leaf Slipper Spring w/ Flat End part # SP-040275, a 30" long x 1-3/4" wide will work. If you need it, there's a U-Bolt Kit # CE23103 and for suspension bolts, the Spring-Eye Bolt with Locknut for Slipper Springs, # 166079.
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- 2 Inch Wide Replacement Equalizer for Slipper Springs on Seven Thousand Pound Triple Axle TrailerThe TruRyde # TREQ1344 Equalizer for 2 inch wide Slipper Springs that you referenced is considered a fit for the dimensions that you listed on your triple axle trailer with seven thousand pound axles. I would recommend replacing the entire equalizer instead of welding in new bushings. You indeed would need 4 equalizers for your triple axle trailer. The total length (a) and the length from the center of the front bolt hole to the center of the middle bolt hole (b) is slightly off when...
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- Bushings for Slipper Spring with 1/2-Inch Inner DiameterThe nylon bushing is included with Slipper Spring # SP-178275. The bushing has an inside diameter intended for a 9/16-inch bolt like # 166079. I linked a page showing all suspension bolts in this diameter. For a bushing with a 1/2-inch inner diameter and the 11/16-inch outer diameter required for this spring you can use # TRBU11506.
view full answer... - Comparing Lippert Never-Fail Bushings to the Bronze Bushings and Wet Bolt Option for Tandem AxlesThe bronze bushings and wet bolts are a great option but they still do require maintenance especially under the conditions you referenced. There really isn't any new information in comparing it is basically the difference between maintenance required and zero maintenance. The Never-Fail bushings # LC279685 are maintenance free and self-lubricating so they will be a better fit for you. This kit comes with the bushings for 4 springs and two equalizers for a complete tandem axle trailer....
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Do you have a question about this Trailer Suspension Part?
Info for this part was:
Installed by:
Jeff D
Installed by:
Randy B
Expert Research:
Jameson C
Video by:
Kathleen M
Video by:
Ian F
Video Edited:
Chris R
Updated by:
Wilson B
Updated by:
Eric H
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David
11/30/2019
It’s been a year already! How time flies. Every things still working great thanks again.